Same version of gtkmm, but on linux (mint "maya", gcc 4.7.3) both
problematic
proggies work as expected,
On Sat, Nov 2, 2013 at 7:55 AM, John Emmas <john...@tiscali.co.uk> wrote:
> The following code crashes when built against gtkmm v2.24.4 (using MSVC) :-
>
> #include "gtkmm/main.h"
> #include "gtkmm/window.h"
>
> int main (int argc, char *argv[])
> {
> Gtk::Main app (&argc, &argv);
> Gtk::Window mainWnd;
>
> mainWnd.set_title("Hello World!");
>
> app.run( mainWnd );
>
> return 0;
> }
>
> The crash occurs at shutdown, when object 'mainWnd' is getting destroyed
> (I believe "unrealized" is the gtkmm parlance). OTOH if I modify function
> main() to look like this, the code doesn't crash any more:-
>
> int main (int argc, char *argv[])
> {
> Gtk::Main app (&argc, &argv);
> Gtk::Window* mainWnd = new Gtk::Window;
>
> mainWnd->set_title("Hello World!");
>
> app.run( *mainWnd );
>
> return 0;
> }
>
> whereas if I add my own 'delete' statement, it crashes in the same way as
> before, while executing 'delete' :-
>
> int main (int argc, char *argv[])
> {
> Gtk::Main app (&argc, &argv);
> Gtk::Window* mainWnd = new Gtk::Window;
>
> mainWnd->set_title("Hello World!");
>
> app.run( *mainWnd );
>
> delete mainWnd; // <--- now crashes here !
> return 0;
> }
>
> This suggests to me that gtkmm is deleting objects somewhere (a) without
> knowing whether or not it created them; and (b) without even knowing if
> they were created from the free store. FWIW if I adapt the code to use
> pure GTK+ functionality the problem goes away (i.e. if the same program
> gets implemented using GTK+ instead of gtkmm). I just wondered if this
> might ring any bells with anyone here?? Alarm bells, at least..! ;-)
> Thanks.
>
> John
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>
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